Just three, please. No ties, honourable mentions or contrivances to sneak a fourth choice in.

Time travel must be an integral part of the show. So a character time travelled ONCE in a show that ran for 120+ episodes, then that doesn't count. Time travel must be the premise, whether it's a person travelling to different eras each week or being stuck in a particular era for an entire season/series.

(DOCTOR WHO can be included. He doesn't always travel to time periods, but he often does!).

Mine are:

THE TIME TUNNEL

SEVEN DAYS

LIFE ON MARS (UK)

I wish SEVEN DAYS had run longer; THE TIME TUNNEL was always fun; and LIFE ON MARS had a solid premise with some touching moments.

DOCTOR WHO is the default favorite...although rather than the 'pure historicals', I preferred the challenge of 'have the Doctor stop an alien invasion in Earth's past', like 'The Visitation' or 'Pyramids of Mars'.

Next, I'd go with a childhood favorite, VOYAGERS!

I could go with LIFE ON MARS for third, although I didn't see every series of the UK version...and although I liked the US version, the final episode, while wrapping up the story, took a sharp turn away from the time-travel premise.

I've really enjoyed when shows that weren't strictly 'about' time travel dabbled in it, such as STAR TREK and TWILIGHT ZONE, but I haven't really watched a lot of stuff where it's the main premise.

For me LIFE ON MARS, great as it was, technically wasn't a time travel show (with it all being in Sam's mind) - and shoot me now if this comes across as me sneaking a fourth choice, definitely not intending - so that leaves me with:

DOCTOR WHO - I just can't not include it! The daddy of them all.

HEROES - Some may quibble about whether it is truly integral to the show, but given that it was the power of one the main characters I'm having it!

MR BENN - I'm guessing this will mean nothing to everyone outside the UK, but MR BENN was a barely animated children's show from the 1970s where the eponymous character would visit a fancy dress shop, try on an outfit and when he left the changing room he would find himself having an appropriate adventure (e.g. a knight, a caveman and so on). There's was going to be a live action film version with John Hannah but it never happened.

QUANTUM LEAP- #1 by a large marginPEABODY'S IMPROBABLE HISTORY- Very informative in my younger days. LEGENDS OF TOMORROW- Maybe because it's the freshest but I really like some of the eras that are traveled to.

Time travel being one of my favorite motifs, I have a tough time thinking of even three. DOCTOR WHO, I suppose, almost by default. And, yes, if Mr. Peabody and Sherman are allowed, I'll let them in. But beyond those? Nope, there's really nothing for me.

For me, there are only two that come to mind... Quantum Leap and DC's Legends of Tomorrow. There are other shows that utilize time travel from time to time (no pun intended), like Star Trek, but none that revolve around the concept that appeal to me.

Those are fighting words, Matthew. Especially as one of your choices, HEROES, is a bit tenuous. ;-))

But I'll forgive you...

***

HEROES is incredibly tenuous, Robbie! In truth, like others, I was struggling to come up with a third after I'd excluded LIFE ON MARS. I am sure there is another time travel show that I've loved it's currently escaping me.

Beyond the usual DOCTOR WHO and the the like here's some you might not have considered (or remembered!):

ODYSSEY 5

-I've heard some rumblings recently that they might return to this series and either continue it or at least give it a suitable conclusion. I have a soft spot for 'second chance' type of stories involving time travel.

11.22.63

-Technically it was a mini series but the people involved (inc. James Franco and even Stephen King) have expressed an intention to develop this further.

I see some people have sorta spoiled LIFE ON MARS/ASHES TO ASHES -- one of the best aspects of watching these 'first run' was forming your own theories as to what is really going on. In a similar vein though, I'm starting to suspect MR ROBOT is actually a time travel story. We'll see how that bears out in the long run.

In truth, Rob, it was just me. Appreciate it was a spoiler but figured it was some time back and if you haven't seen it yet it, chances are you weren't going to. Apologies if my post did spoil it for anyone.

I recall a comic where someone sent Batman and Robin back to Ancient Rome via hypnotics. I think. They hadn't physically travelled back through time, but had mentally (somehow). Does that count as time travel?

Yeah, that was Professor Nichols, the go-to 'friendly yet absent-minded scientist' who facilitated most Bat-time travel.

He popped up again in a 1980 BRAVE & BOLD team-up with the western hero Scalphunter, in which Bruce is sent back to the Civil war to investigate a 'Batman symbol' being found in a Civil War-era antique chest he just acquired...and, obviously, like Data in the TNG episode, he causes the events to happen by being there.

In that story, Bruce mentioned that Nichols was using hypmosis, as opposed to 'physical' time travel. I wasn't sure if that was some sort of latter-day 'retcon', or if the older stories had always made the distinction, as well.

Anybody remember the 'astronauts in the Stone Age' mid-60s sitcom, IT'S ABOUT TIME?".................

I'd only consider this time travel on a technicality - the astronauts time traveled once to the prehistoric era and then once back to modern day (with the cave family they met). It was just conventions to set up the premise of the show and not something where they kept bouncing around time.